Actually, guys, I would be a little hesitant about enabling HTML tags on your forums. A malicious user could use HTML to plant all kinds of fun stuff into your forums, your database, and possibly even on your server, itself. HTML poses a pretty big security risk.
Besides all that, BBcode exactly emulates everything that HTML does. In fact, with this version of the forum software, you can create and manage custom BBcode tags. Heck, for that matter, I'll give you one. This one allows your members to embed YouTube in their posts.
There are two boxes to fill in. In the top box put the following:
Code:
[youtube]{TEXT}[/youtube]
And then the following in the bottom box.
Code:
<object width="512" height="384"><param name="movie" value="http://www.youtube.com/v/{TEXT}"></param><embed src="http://www.youtube.com/v/{TEXT}" wmode="transparent" type="application/x-shockwave-flash" width="512" height="384"></embed></object>
Just take this and paste it into your "BBCodes" sheet (which is found in the "Posting" sheet in your ACP).
There are all sorts of little custom things you can setup. If you have any questions or want any more codes for your custom set, and if we have them, we'll be glad to share them.